Question

find the area:
use 3.14 for π
image of a circle with radius 3 cm
multiple - choice question
find the area of this circle.
7.07 cm²
113.04 cm²
18.84 cm²
28.26 cm²

Explanation:

Step1: Recall circle area formula

The area of a circle is $A = \pi r^2$, where $r$ is the radius.

Step2: Substitute given values

Here, $r=3\ \text{cm}$ and $\pi=3.14$. Substitute into the formula:
$A = 3.14 \times 3^2$

Step3: Calculate the square of radius

$3^2 = 9$, so:
$A = 3.14 \times 9$

Step4: Compute final area

$3.14 \times 9 = 28.26$

Answer:

28.26 cm²